Not content of just having a blog or a wiki, Martin Fowler rolled his own Bliki.

Back when I started my blog, I used Steve Pikes PikiePikie, which was a wiki with blog functionality. Sadly, Steve seems to have given up on development. His server has been down for a loooong time.

Update: There seems to be life in PikiePikie yet: Go to the newHomePage of PikiePikie

You can still check my Pikie out here